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net: stmmac: dwmac4: Account for the primary MAC address for UC filtering

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The same filter slots are used to store the main MAC address as well as
the address for the unicast filter. Let's account for that when deciding
whether or not to use promisc when programming the UC list in hardware.

Fixes: 477286b53f ("stmmac: add GMAC4 core support")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260826140500.616466-4-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Maxime Chevallier
2026-08-26 16:04:55 +02:00
committed by Jakub Kicinski
parent 9698b6da37
commit 82187f42c0
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
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@@ -521,7 +521,7 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
value |= GMAC_PACKET_FILTER_HPF;
/* Handle multiple unicast addresses */
if (netdev_uc_count(dev) > hw->unicast_filter_entries) {
if (netdev_uc_count(dev) + 1 > hw->unicast_filter_entries) {
/* Switch to promiscuous mode if more than 128 addrs
* are required
*/